更换号码

Change Number is supported if you:

• can send and receive Signal messages on the phone with your old number.
• are keeping the same phone and changing the number.

Change Number is not supported if you:

• can not send and receive Signal messages on the phone with your old number.
• do not have your old device or lost your phone.
• 已清除手机。

Requirements

You must be using the latest version of Signal available for that device:

• Android v5.30.6 or later
• iOS v5.27.1 or later
• All linked devices are updated to iOS v5.27.1 or later and Desktop v5.30.0 or later

Not seeing the feature? 

1. Confirm you can send and receive Signal messages on the phone with your old number.
2. Check that all of linked devices (iPads and Desktops) meet the requirements listed.
3. Swipe to close Signal on your phone or restart your phone. Then open Signal again. It should appear after two hours.

Steps to change number on the same phone

1. In Signal, tap your profile > Settings (iOS only) > Account > Change Phone Number.
2. You will not be able to undo this. Select Continue.
3. Enter your old number in the first field and your new number in the second field.
4. Select Continue or Done.
5. Confirm the new number is correct.
   • Wrong Number? Tap Edit Number to change.
6. Select Change Number.
7. Follow the on-screen instructions to complete the registration process for the new number.

What do my contacts see?

• Your saved contacts that you never chatted with will not see the alert of the phone number change. See also: Does Signal send my number to my contacts?
• Your contacts that you have chatted with before may see an alert in your chat that the phone number has changed.

What if I do not have access to Signal with my old number?

1. Delete your account to wipe your message history.
2. 使用新号码注册。
3. 就像与只发短信的非 Signal 联系人进行沟通一样，告知 Signal 联系人新号码，并要求删除旧号码。
4. 向旧号码发送的信息和通话将无法送达。

假如某人用我的旧号码注册，该怎么办？ 
当某人在其手机上用您的旧号码注册了 Signal，消息记录将为空。另外，与旧号码联系时，Signal 联系人将获悉安全码已更改。